我有点新的angular2,我希望你可以帮助我,我很确定它一定是简单的东西,但这是交易我正在制作一个服务,可以处理http调用,但它需要在数据加载后应用一些过滤器再次向api服务器询问新的参数基本上我想让angular2处理那部分
更新**
服务
httpHandler(type,model){var token = this.LoginService.JwtDecoded(); var authHeader = new Headers(); authHeader.append('Authorization', 'Bearer ' + token);
return this.http.get('http://127.0.0.1/api/service/'+model, { headers: authHeader }) .map((res: Response) => res.json()); }
组件
this.Request.httpHandler('get','receiver/') .subscribe( data => this.data = data, <-- from here err => this.error = 'there is a mistake!', () => console.log(this.data) <-- this one is outputing just what i want ); console.log(data); <-- i wanna output the same result in here
那么,我怎样才能将api结果捕获到变量中?
更新** 我想输出&#39; this.data&#39;在外部订阅,奇怪的是我可以输出内部订阅和在HTML中,但我需要在输出html之前用json做一些东西..任何想法的人?谢谢!
感谢您的时间,非常感谢。
答案 0 :(得分:2)
创建服务以获取数据
// xyz.service.ts
import {Injectable} from '@angular/core';
import {Http, Response} from '@angular/http';
import {Observable} from 'rxjs/Observable';
import 'rxjs/add/operator/map';
@Injectable()
export class DataService {
private url = `receiver/`;
constructor(private http: Http) {
}
getData(): Observable<any> {
return this.http.get(this.url)
.map((res: Response) => res.json());
}
}
现在在组件中使用该服务。
//xyz.component.ts
import {Component, OnInit} from '@angular/core';
import {DataService} from './xyz.service';
import {HTTP_PROVIDERS} from '@angular/http';
@Component({
selector: 'app-home-content',
templateUrl: 'xyz.component.html',
styleUrls: ['xyz.component.scss'],
providers: [DataService, HTTP_PROVIDERS]
})
export class HomeContentComponent implements OnInit {
private data: Object;
constructor(private _dataService: DataService) {
}
ngOnInit() {
this._dataService.getData().subscribe(data => {
this.data = data;
});
}
}
现在,数据将在this.data